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Spark Plasma Sintering of a Zr‐Based Metallic Glass
Author(s) -
Perrière Loïc,
Thai Minh Thanh,
TusseauNenez Sandrine,
Blétry Marc,
Champion Yannick
Publication year - 2011
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201000334
Subject(s) - devitrification , spark plasma sintering , materials science , amorphous metal , sintering , alloy , fabrication , metallurgy , amorphous solid , glass transition , plasma , composite material , chemical engineering , crystallization , polymer , medicine , chemistry , alternative medicine , physics , organic chemistry , pathology , quantum mechanics , engineering
Development of metallic glasses is hindered by the difficulties in manufacturing bulk parts. In this paper, we report on the fabrication of glassy alloys using the spark plasma sintering of gas atomized powders. The Zr‐based processed alloy has a high glass forming ability. Its densification is obtained at the glass transition temperature (390 °C) under high pressure (≈ 500 MPa). Systematic study of the effect of powder particle size and sintering time is performed through structural and thermal analyses. Local and partial devitrification of the amorphous alloy is detected, resulting from local temperature overshoots. From these analyses, an approach of the spark plasma sintering mechanism of metallic glasses is proposed.